161292840400 has 60 divisors (see below), whose sum is σ = 387575943552. Its totient is φ = 64505499520.

The previous prime is 161292840389. The next prime is 161292840413. The reversal of 161292840400 is 4048292161.

It is a self number, because there is not a number n which added to its sum of digits gives 161292840400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2385459 + ... + 2452141.

Almost surely, 2^161292840400 is an apocalyptic number.

161292840400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161292840400 is an abundant number, since it is smaller than the sum of its proper divisors (226283103152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161292840400 is a wasteful number, since it uses less digits than its factorization.

161292840400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72748 (or 72737 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 161292840400 in words is "one hundred sixty-one billion, two hundred ninety-two million, eight hundred forty thousand, four hundred".